Merry and Pippin

"'There are trolls!' Pippin panted. 'Down in a clearing in the woods not far below. We got a sight of them through the tree-trunks. They are very large!'
'We will come and look at them,' said Strider, picking up a stick. Frodo said nothing, but Sam looked scared. The sun was now high, and it shone down through the half-stripped branches of the trees, lighting the clearing with bright patches of light. They halted suddenly on the edge and peered through the tree-trunks, holding their breath. There stood the trolls: three large trolls. One was stooping, and the other two stood staring at him.
Strider walked forward unconcernedly. 'Get up, old stone!' he said and broke his stick upon the stooping troll. Nothing happened. There was a gasp of astonishment from the hobbits, and then even Frodo laughed. 'Well!' he said. 'We are forgetting our family history! These must be the very three that were caught by Gandalf, quarreling over the right way to cook thirteen dwarves and one hobbit.
'I had no idea we were anywhere near the place!' said Pippin. He knew the story well. Bilbo and Frodo had told it often; but as a matter of fact, he had never more than half believed it. Even now, he looked at the stone trolls with suspicion, wondering if some magic might not suddenly bring them to life again. "
From "The Lord of the Rings", By J.R.R Tolkien